Destroy the adult film tapes if you want to ensure no one ever sees them again. This is an especially advisable route to take if you appear in the tapes. Slate magazine recommends complete physical destruction by pulling the tape out of the plastic cover and running it through a shredder. After shredding, bring the tape to a licensed incineration facility that can complete the destruction.
Use a degausser machine if you have the budget for one. Government-certified degausser machines are instruments that realign the magnetic domains of a videotape, making it permanently unreadable. Such a machine costs several thousands of dollars, according to Slate Magazine.
Give your adult film collection to a friend who might enjoy it, if the concept of the films doesn't bother you enough to destroy the tapes.
Recycle your adult film tapes. Whether you leave the videotape intact or remove the actual tape from the plastic body, you can recycle the objects. Contact your local government to inquire about the nearest location for videotape recycling and drop off the collection. Remove any labels from the outside if you want to avoid embarrassment.
Place the adult film tapes in a black garbage bag so the contents can't be seen and throw them in the garbage.